In 1725 all of the medieval glass in this magnificent cathedral-size
building was assembled in the great east window that dates from 1416. Of the original glass for this window that
dates from c.1440-50 there are remains above the transom, in the 60 or so tracery lights, in the canopies but also
in some of the figures. The traceries indicate that the subject is almost certainly a Te Deum. (I have yet to photograph
these properly!)

Below the transom are some fine C13 panels mostly concerning St Martin; they are in the four outer lancets whilst
there are some fine C14 remains mostly in the central five lancets, although bits are to be found elsewhere amid
the C19 glass.